Multi-motion fail-safe operating gate valve

A valve assembly (100, 300) includes a valve body and a valve member (104) configured to translate between an open and a closed position. The valve assembly (100, 300) also includes a bonnet (108) coupled to the valve body and a valve stem (106) coupled to the valve member (104). The valve assembly...

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Bibliographische Detailangaben
Hauptverfasser:	MCEVOY, Travis Kyle, MITELMAN, Guy, CHOATE, Jeremy, CODY, Paul, ADAMS, Keith M
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	A valve assembly (100, 300) includes a valve body and a valve member (104) configured to translate between an open and a closed position. The valve assembly (100, 300) also includes a bonnet (108) coupled to the valve body and a valve stem (106) coupled to the valve member (104). The valve assembly (100, 300) also includes an actuator (102) coupled to the bonnet (108). The actuator (102) includes a first drive mechanism (112) positioned to translate a first driving force to the valve stem (106), the first drive mechanism being in operation during a normal operating condition. The actuator (102) also includes a second drive mechanism (114) positioned to translate a second driving force to the valve stem (106), the second drive mechanism (114) being in operation during a fail-safe operating condition.